Fix the site

There are many issues with the site. Many deal with the API content being completely wrong, and others deal with the styling being completely off. This PR aims to fix that.

I've reshuffled the CONTRIBUTING guides out of the _doc_ folder to keep it clean. I've also shuffled a lot of the Jade templates and other resources to make the structure nicer.

I removed dead CSS and JS. I took out the search bar, since it wasn't working at all. I went through each doc page to make sure it was accurate and functional.

I realize again @nightwing you will need to rebase this stuff... After this point I will destroy the branch and start it again.